Metasonix R-52 - Multimode Filter


Vacuum tube multimode filter with a very characteristic wild sound, known from Metasonix. Cutoff and resonance can be voltage controlled.



The R-52 uses two pentodes, type 12AU6. The circuit is derived directly from our award-winning TM-2 filter, but with all the features of our TM-6 filter. A pair of bandpass filters is swept with a Vactrol(tm) control element, a resonant treble filter and a less-resonant bass filter, giving a 4-pole lowpass response. Filter sweep range (approx): bass-only 80-200 Hz, bandpass/lowpass LOW setting 300-1000 Hz, HIGH setting 800-1900 Hz. Filter resonance/Q adjustable from less than 1 to oscillation. Voltage gain approx. 2 with RESONANCE set to 10 o'clock position and INPUT LEVEL set to maximum. Both filters, or one at a time, may be selected and mixed in desired amounts using the front-panel RESPONSE control. This allows for a wide range of equalization and special sound effects. CV inputs are available for sweeping the cutoff frequency and for affecting the treble filter's resonance. Circuit distortion is less than 0.5% typical.


Audio: input and output
CV inputs for cutoff frequency and resonance


3U Eurorack module, 22HP wide, 25mm deep. Tubes protrude from the frontplate 22mm.
Current draw 150 mA.

0.255 kg
Article Number
former retail price: €407.56

This item is discontinued or sold out and no longer available, please feel free to look for comparable new stuff in the following categories.


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